Python.Runtime.BadPythonDllException

[woaidianqian]

using System;
using System.IO;
using System.Threading.Tasks;
using Python.Runtime;

namespace Python.Deployment.Download
{
class Program
{
static async Task Main(string[] args)
{
// ================================================
// This example demonstrates how to download a Python distribution (v2.7.9) and install it locally
// ================================================

        // set the download source
        Python.Deployment.Installer.Source = new Deployment.Installer.DownloadInstallationSource()
        {
            DownloadUrl = @"https://www.python.org/ftp/python/3.7.3/python-3.7.3-embed-amd64.zip",
        };

        // install in local directory. if you don't set it will install in local app data of your user account
        Python.Deployment.Installer.InstallPath = Path.GetFullPath(".");

        // see what the installer is doing
        Python.Deployment.Installer.LogMessage += Console.WriteLine;

        // install from the given source
        await Python.Deployment.Installer.SetupPython();

        // ok, now use pythonnet from that installation
        PythonEngine.Initialize();

        // call Python's sys.version to prove we are executing the right version
        dynamic sys=Py.Import("sys");
        Console.WriteLine("### Python version:\n\t" + sys.version);

        // call os.getcwd() to prove we are executing the locally installed embedded python distribution
        dynamic os = Py.Import("os");
        Console.WriteLine("### Current working directory:\n\t" + os.getcwd());
        Console.WriteLine("### PythonPath:\n\t" + PythonEngine.PythonPath);

    }
}

}

PythonEngine.Initialize();
error！！！

Python.Runtime.BadPythonDllException:“Runtime.PythonDLL was not set or does not point to a supported Python runtime DLL. See https://github.com/pythonnet/pythonnet#embedding-python-in-net”

[henon]

did you compile this for x86 ?

[henon]

You may have to set this

[woaidianqian]

I have already set it to x64, but the problem still persists. If I don't specify the Python version, it will automatically download Python 3.11 without any error. However, when I specify the Python version, it throws an error.

[woaidianqian]

using System;
using System.Threading.Tasks;
using Python.Included;
using Python.Runtime;

namespace NetCoreExample
{
    class Program
    {
        static async Task Main(string[] args)
        {
            await Installer.SetupPython();
            PythonEngine.Initialize();
            dynamic sys=PythonEngine.ImportModule("sys");
            Console.WriteLine("Python version: " + sys.version);
        }
    }
}
dynamic sys=PythonEngine.ImportModule("sys");

The last line should be changed to:

dynamic sys=Py.Import("sys")

[henon]

and that solves it?

[woaidianqian]

There is no error when the program automatically downloads python, and if you want to set the python version by yourself, it is still not solved

[henon]

I guess the newer version of pythonnet doesn't work with old python versions any more?